5.10. 使用实时内核构建 RHEL 镜像

流程

1. 创建以下目录：

   # mkdir /etc/osbuild-composer/repositories/

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2. 将 /usr/share/osbuild-composer/repositories/rhel-10.json 文件中的内容复制到新目录中：

   # cp /usr/share/osbuild-composer/repositories/rhel-10.json /etc/osbuild-composer/repositories

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3. 编辑 /etc/osbuild-composer/repositories/rhel-10.json 文件，以使其包含 RT 内核存储库：

   # grep -C 6 kernel-rt /etc/osbuild-composer/repositories/rhel-10.json
       {
         "baseurl": "https://cdn.redhat.com/content/dist/rhel10/10/x86_64/appstream/os",
         "gpgkey": "-----BEGIN PGP PUBLIC KEY BLOCK-----\n\nm………..=\n=UZd/\n-----END PGP PUBLIC KEY BLOCK-----\n",
         "rhsm": true,
         "check_gpg": true
       },
       {
         "name": "kernel-rt",
         "baseurl": "https://cdn.redhat.com/content/dist/rhel10/10/x86_64/rt/os",
         "gpgkey": "-----BEGIN PGP PUBLIC KEY BLOCK-----\n\nmQINBEr………fg==\n=UZd/\n-----END PGP PUBLIC KEY BLOCK-----\n",
         "rhsm": true,
         "check_gpg": true
       },

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4. 重启服务：

   # systemctl restart osbuild-composer

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5. 确认 kernel-rt 已包含在 .json 文件中：

   # composer-cli sources list
   # composer-cli sources info kernel-rt

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   您将看到您之前配置的 URL。

6. 创建一个蓝图。在蓝图中，添加 "[customizations.kernel]" 自定义。以下是蓝图中包含 "[customizations.kernel]" 的一个示例：

   name = "rt-kernel-image"
   description = ""
   version = "2.0.0"
   modules = []
   groups = []
   distro = "rhel-10.0"
   [[customizations.user]]
   name = "admin"
   password = "admin"
   groups = ["users", "wheel"]
   [customizations.kernel]
   name = "kernel-rt"
   append = ""

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7. 将蓝图推送到服务器：

   # composer-cli blueprints push rt-kernel-image.toml

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8. 从您创建的蓝图中构建镜像。以下示例构建一个(.qcow2)镜像：

   # composer-cli compose start rt-kernel-image qcow2

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9. 将您构建的镜像部署到您要使用实时内核功能的系统中。